Results 91 to 100 of about 29,399 (298)

Sea breeze: Induced mesoscale systems and severe weather [PDF]

Sea-breeze-deep convective interactions over the Florida peninsula were investigated using a cloud/mesoscale numerical model. The objective was to gain a better understanding of sea-breeze and deep convective interactions over the Florida peninsula using
Cotton, W. R., Nicholls, M. E., Pielke, R. A.   +2 more
core   +1 more source

The role of soil moisture in the inland penetration of Indian monsoon low‐pressure systems

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We use the Advanced Weather Research and Forecasting model to examine the role of soil moisture in the inland penetration of Indian monsoon low‐pressure systems (LPSs). We find that LPSs penetrate deeply into India despite a dry land surface; however, their inland penetration is adversely affected when there is a reduction in the total surface heat ...
Akshay Deoras, Kieran M. R. Hunt, Andrew G. Turner   +2 more
wiley   +1 more source

Thermodynamic and microphysical properties of summertime marine fog observed from Sable Island

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Atmospheric profiling and near‐surface fog and visibility measurements revealed synoptic‐scale forcing as the dominant factor in fog formation over Sable Island, with deep fog layers under low‐pressure systems and shallow fog layers under high‐pressure systems.
Kelsey Rowe, Jesus Ruiz‐Plancarte, Ryan Yamaguchi, David Ortiz‐Suslow, Eric Pardyjak, Ismail Gultepe, Harindra J. S. Fernando, Qing Wang   +7 more
wiley   +1 more source

‘Super-Parameterization’ – a Better Way to Simulate Regional Extreme Precipitation?

Journal of Advances in Modeling Earth Systems, 2012
Extreme precipitation is generally underestimated by current climate models relative to observations of present-day rainfall distributions. Possible causes of this systematic error include the convective parameterization in these models that have been ...
Michael F. Wehner, William D. Collins, Daniele Rosa, Fuyu Li   +3 more
doaj  

Multiple Equilibria in a Single-Column Model of the Tropical Atmosphere

, 2007
A single-column model run under the weak temperature gradient approximation, a parameterization of large-scale dynamics appropriate for the tropical atmosphere, is shown to have multiple stable equilibria.
A. H. Sobel, Bergman, Biasutti, Bretherton, Derbyshire, G. Bellon, J. Bacmeister, Khouider, Kuang, Kuang, Mapes, Neelin, Neggers, Nilsson, Raymond, Raymond, Rennó, Sobel, Sobel, Wang, Zeng, Zhang   +21 more
core   +1 more source

Assessing the impact of model biases on subseasonal forecast skill

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Relaxation experiments where the nudging was performed towards bias‐corrected integrations of the same model display significantly improved skill at weeks 3 and 4, particularly in the northern extratropics. This indicates that there is a large potential for improving dynamical subseasonal forecasting skill by improved treatment of model biases.
Frédéric Vitart, Magdalena Balmaseda
wiley   +1 more source

The Impact of Model Uncertainties on Analyzed Data in a Global Data Assimilation System

Terrestrial, Atmospheric and Oceanic Sciences, 2011
The impact of model uncertainties on analyzed data is investigated using a global data assimilation system. This issue is explored in a 3D-Var system based on the National Centers for Environmental Prediction (NCEP)/Department of Energy (DOE) system ...
Song-You Hong, Hyun Mee Kim, Jung-Eun Kim, Seung-On Hwang, Hoon Park   +4 more
doaj   +1 more source

Mesoscale and microphysical processes leading to extreme hourly rainfall prior to the merger of two mesoscale convective systems in Central China

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Short‐term extreme rainfall can be produced by the variation of low‐level warm moist airflow during mesoscale convective systems (MCSs) approaching another. The cold outflow of the rapidly moving MCS intensifies the warm moist airflow in front, enhancing the convergence and ascending motion in the quasi‐stationary MCS.
Xiaoyu Gao, Yali Luo, Jinfang Yin, Chong Wu   +3 more
wiley   +1 more source

Development and Application of a New Convective Entrainment Rate Parameterization for Improving Precipitation Simulation Over the Tibetan Plateau and Its Surrounding Areas

Journal of Advances in Modeling Earth Systems
The Tibetan Plateau (TP) significantly impacts the global climate. TP's unique geographical conditions make it one of the areas with the largest precipitation biases in numerical models.
Junjun Li, Chunsong Lu, Jinghua Chen, Jian Li, Jing Yang, Xiaoqi Xu, Lei Zhu, Xin He, Shiying Wu   +8 more
doaj   +1 more source

An updated parameterization of the unstable atmospheric surface layer in the Weather Research and Forecasting (WRF) modeling system [PDF]

Geoscientific Model Development
The accurate parameterization of atmospheric surface layer processes is crucial for weather forecasts using numerical weather prediction models. Here, an attempt has been made to improve the surface layer parameterization in the Weather Research and ...
P. Namdev, M. Sharan, P. Srivastava, S. K. Mishra   +3 more
doaj   +1 more source